Home / 218,981.88-302,143.23-123,470.10

Finding the Fourth Proportional to 218,981.88, 302,143.23 and 123,470.10

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Solution

The fourth proportional to 218,981.88, 302,143.23 and 123,470.10 is: 170,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,981.88 : 302,143.23 = 123,470.10 : x
  2. Step 2: Convert to fraction form
    218,981.88/302,143.23 = 123,470.10/x
  3. Step 3: Cross multiply
    218,981.88x = 302,143.23 × 123,470.10
  4. Step 4: Simplify right side
    218,981.88x = 37,305,654,822.42
  5. Step 5: Solve for x
    x = 37,305,654,822.42/218,981.88
  6. Step 6: Final answer
    x = 170,359.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.